They're all at Hobby People stores. Generally they stock one of each and only re-stock after they've sold. There is a standard one day a week truck delivery from the central warehouse to each store. Twice a week during the Holiday season.
Anyone coming to the SCRA launch on Sunday 2/21 can see one of each (except the Mini-Max which I left on the peg) and they will be available to anyone who wants them and was not able to find them at their nearby store.